Synonyms: 1,1-Difluoroethane (IUPAC); Ethylidene Difluoride; Freon 152a; R-152a; Fluorocarbon 152a; HFC152a

CAS No.: 75-37-6   EC No.: 200-866-1   RTECS No.: KI1410000

Molecular Weight:  66.05

Molecular Formula: C2H4F2

Structural Formula:

m.p.: -117°C

b.p. (1 atm): -24.7°C

Vapor Pressure: 0.599Mpa

Critical T.: 113.5°C

Critical P.: 45.0 mPa

Critical Density: 0.365g/cm3

ODP: 0

GWP: 120 (CO2=1)

Chemical and Physical properties: HFC-152 is a colorless, odorless compressed gas, stable under normal condition

(Note: 1,2-difluoroethane: HFC-152)

HFC-152a (Difluoroethane) can be made by the following reaction under mercury-based catalyst: HC≡CH + 2HF → CH3CHF2

1) HFC-152a (Difluoroethane) is used as electronic cleaning solvent

2) Used as consumer aerosol propellant, especially those subject to stringent VOC requirements, alternative for CFC-12

3) Used as a component of azeotopic blend refrigerant such as R-401a (with 13% HFC-152a), R-401b (with 11% HFC-152a), R-401C (with 15% HFC-152a) and R-411a (with 11% HFC-152a) and R-411b (with 3% HFC-152a)

Items	Specification
	First	Second	Third
HFC-152a (Difluoroethane)purity, %	99.9 min	99.8 min	99.5 min
moisture, mg/kg	10 max	10 max	20 max
acidity, ppm	0.1 max	0.1 max	1.0max
nonvolatile residues, mg/kg	100 max	100 max	100 max
noncondensable gas in vapor phase, %	1.5	1.5	1.5

740kgs/cylinder,  9.62mt/20' FCL

Filling ratio 0.79

HFC-152a (Difluoroethane) is regulated by the UN as hazardous substance

Flammable gas

UN1030

Class 2.1

PG: unknown

R-Phrase: R12

S-Phrase: S7, S16, S33, S43

For more information, please see MSDS